diff --git a/src/intel/ci/anv-adl-vkd3d-fails.txt b/src/intel/ci/anv-adl-vkd3d-fails.txt
index 5108190b27e..e88ca364654 100644
--- a/src/intel/ci/anv-adl-vkd3d-fails.txt
+++ b/src/intel/ci/anv-adl-vkd3d-fails.txt
@@ -2,6 +2,9 @@ test_fence_wait_robustness,Crash
 test_sampler_feedback_min_mip_level_array,Fail
 test_sampler_rounding,Fail
 test_sm67_dynamic_texture_offset,Fail
+# Undefined behavior not supported unless EXT_descriptor_buffer is
+# used or running on Gfx12.5+ where we don't do descriptor indirection
+# (prior generations have a descriptor heap too small 64MB)
 test_undefined_read_typed_buffer_as_untyped_dxbc,Fail
 test_undefined_read_typed_buffer_as_untyped_dxil,Fail
 test_line_rasterization,Fail